Construction method of double-layer anchor support joint for variable-section foundation slab

Abstract

The present invention relates to the field of building construction, and specifically to a construction method for a double-layer anchor bar support seat for a variable-section foundation plate. The end heads of upper and lower anchor bars that penetrate into the variable-section foundation plate are used as a part of the anchor bar support seat. Anchor bar support seat A and anchor bar support seat B are added to form a self-bearing support structure. After the binding is completed, the horizontal and vertical directions are coordinated to bear force to support the upper anchor bars of the foundation plate. Compared with the existing construction method, the use of supporting horse stools is reduced, saving costs. In addition, by setting the anchor bar support seat B, the supporting horse stool under the upper anchor bars of the low-section foundation plate is omitted, the construction process is simplified, and construction materials are saved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a construction method for a double-layer anchor bar support joint of a variable-section foundation plate. Background Art

[0002] When constructing the steel bars of variable-section foundations (such as rafts, waterproof boards, independent foundations, strip foundations, etc.), steel horse stools are often used to support the upper steel bars, so as to ensure the designed position of the upper steel bars. According to the designed specifications and thickness of the foundation plate steel bars, steel horse stools of different forms and specifications are selected, such as I-shaped, Z-shaped, bracket-shaped, etc., which are formed by bending or welding steel bars. Then the placement spacing of the steel horse stools is designed. For example, the placement spacing of the steel horse stools is usually 1-1.5 meters, and the number of steel horse stools is large. No matter what kind of steel horse stool, it is necessary to use steel bars that are processed by a forming machine or welded before being tied and installed, which increases the consumption of labor and materials. Summary of the invention

[0003] In view of the above problems, an embodiment of the present invention provides a construction method for a double-layer anchor bar support seat of a variable-section foundation plate.

[0004] An embodiment of the present invention provides a construction method for a double-layer anchor bar support joint of a variable-section foundation plate, comprising:

[0005] Anchor support joint A and anchor support joint B are designed, wherein the anchor support joint A comprises two support tubes with drilled holes, pins and connecting rods, the support tubes are folded tubes with a certain bending angle, and the two ends of the connecting rods are 90-degree hooks and can be inserted into the support tubes; the overall structure of the anchor support joint B is the same as that of the anchor support joint A, the only difference being that the support tube in the anchor support joint B is a straight tube;

[0006] The inner diameter of the support tube and the diameter of the connecting rod are determined according to the diameter of the anchor bar in the variable-section foundation plate. The bending angle of the support tube in the anchor bar support joint A is determined according to the slope of the variable-section foundation. The length of the connecting rod is determined according to the spacing between the anchor bars in the variable-section foundation plate. The straight section length of the support tube in the anchor bar support joint A and the length of the support tube in the anchor bar support joint B are determined according to the distance between the upper anchor bar of the foundation plate and the lower anchor bar of the foundation plate. The anchor bar support joint A and the anchor bar support joint B are cut and manufactured according to the determined data.

[0007] Lay out the lines according to the conventional procedures, including the bottom edge line of the foundation plate, the anchor bar position line of the lower layer of the foundation plate, and the variable section line. After laying out the lines, tie the anchor bars of the lower layer of the foundation plate;

[0008] Anchor support seat A is installed on the anchor bars of the lower layer of the foundation plate at the upper edge of the slope section of the variable-section foundation plate. During installation, the broken line segment on the lower side of the support tube in anchor support seat A is put on the end of the anchor bars of the lower layer of the foundation plate, and the straight line segment is ensured to be vertical. The two ends of the connecting rod are inserted into the two supporting tubes. During the insertion process, the elevation of the connecting rod is adjusted by drilling holes and pins;

[0009] With anchor support joint A as support, tie the upper anchor bars of the variable section foundation plate from the outside to the inside from the high section of the variable section foundation plate. When tied to the top of the low section of the variable section foundation plate, the upper anchor bars of the high section foundation plate extend vertically downward, and the anchor support joint B is installed at the corresponding position below;

[0010] When installing anchor bar support joint B, the hooks at both ends of the connecting rod are tied upwards to the anchor bars of the lower layer of the foundation plate, and the two support tubes are vertically sleeved on the connecting rods. The ends of the upper anchor bars of the high-section foundation plate are inserted into the support tubes. During the insertion process, the elevation of the upper anchor bars of the high-section foundation plate is adjusted by drilling holes and pins.

[0011] With anchor support seat B as support, tie the upper anchor bars of the lower foundation slab and tie them firmly with the upper anchor bars of the higher foundation slab to complete the double-layer anchor bar construction of the variable-section foundation slab.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: the ends of the upper and lower anchor bars deep in the variable-section foundation plate are utilized as part of the anchor bar support seat, and additional steel bar connectors are used to form a self-supporting support structure, which is subjected to coordinated forces in the horizontal and vertical directions after the binding is completed, thereby supporting the upper anchor bars of the foundation plate. Compared with the prior art, the use of supporting saddles is reduced, thereby saving costs. In addition, by providing the anchor bar support seat B, the supporting saddle under the upper anchor bars of the lower foundation plate is omitted, thereby simplifying the construction process and saving construction materials.

[0013] Optionally, the spacing between the drill holes is 20-100 mm.

[0014] Optionally, the length of the broken line segment of the support tube in the anchor support seat A is 30-100 mm.

[0015] Optionally, the lengths of the hook sections at both ends of the connecting rod are 50-100 mm.

[0016] Optionally, the inner diameter of the support tube is 2 mm larger than the diameter of the anchor bars in the variable-section foundation plate.

[0017] Optionally, after the anchor support seats A and the anchor support seats B are installed, tie rods are tied between adjacent anchor support seats A, and tie rods are tied between adjacent anchor support seats B to further improve stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present invention, constitute a part of the present application, and do not constitute a limitation of the present invention. In the drawings:

[0019] Figure 1 A front and sectional view of a double-layer anchor bar support joint construction structure of a variable-section foundation plate provided in an embodiment of the present invention;

[0020] Figure 2 A top view of a double-layer anchor bar support joint construction structure of a variable-section foundation plate provided in an embodiment of the present invention;

[0021] Figure 3 A schematic diagram of the three-dimensional structure of an anchor support seat A provided in an embodiment of the present invention;

[0022] Figure 4 A schematic diagram of the construction effect of a side view of an anchor support seat A provided in an embodiment of the present invention;

[0023] Figure 5 A schematic diagram of the main construction effect of an anchor support seat A provided in an embodiment of the present invention;

[0024] Figure 6 A schematic diagram of the three-dimensional structure of an anchor support seat B provided in an embodiment of the present invention;

[0025] Figure 7 A side view construction effect diagram of an anchor support joint B provided in an embodiment of the present invention;

[0026] Figure 8 This is a main construction rendering of an anchor support seat B provided in an embodiment of the present invention.

[0027] Among them, 1. Support pipe; 2. Pin; 3. Connecting rod; 4. Upper anchor bar of foundation plate; 5. Lower anchor bar of foundation plate; 6. Slope section of variable-section foundation plate; 7. High section of variable-section foundation plate; 8. Low section of variable-section foundation plate. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments and the accompanying drawings. Here, the illustrative embodiments of the present invention and their descriptions are used to explain the present invention, but are not intended to limit the present invention.

[0029] See also Figure 1-Figure 8 The embodiment of the present invention provides a construction method for a double-layer anchor bar support joint of a variable-section foundation plate, comprising:

[0030] An anchor support joint A and an anchor support joint B are designed, wherein the anchor support joint A comprises two support tubes 1 with drilled holes, a pin 2 and a connecting rod 3, the support tube 1 is a broken line tube with a certain bending angle, and the two ends of the connecting rod 3 are 90-degree hook-shaped and can be inserted into the support tube 1; the overall structure of the anchor support joint B is the same as that of the anchor support joint A, the only difference is that the support tube 1 in the anchor support joint B is a straight tube;

[0031] The inner diameter of the support tube 1 and the diameter of the connecting rod 3 are determined according to the diameter of the anchor bar in the variable-section foundation plate, the bending angle of the support tube 1 in the anchor bar support joint A is determined according to the slope of the variable-section foundation, the length of the connecting rod 3 is determined according to the spacing between the anchor bars in the variable-section foundation plate, the straight section length of the support tube 1 in the anchor bar support joint A and the length of the support tube 1 in the anchor bar support joint B are determined according to the distance between the upper anchor bar 4 of the foundation plate and the lower anchor bar 5 of the foundation plate, and the anchor bar support joint A and the anchor bar support joint B are cut and manufactured according to the determined data;

[0032] The laying out is performed according to the conventional process, including the bottom edge line of the foundation plate, the position line of the anchor bar 5 of the lower layer of the foundation plate, and the variable section line. After the laying out, the anchor bar 5 of the lower layer of the foundation plate is tied;

[0033] Anchor support seat A is installed on the anchor bar 5 of the lower layer of the foundation plate at the upper edge of the slope section 6 of the variable-section foundation plate. During installation, the broken line segment on the lower side of the support tube 1 in the anchor support seat A is put on the end of the anchor bar 5 of the lower layer of the foundation plate, and the straight line segment is ensured to be vertical. The two ends of the connecting rod 3 are inserted into the two supporting tubes 1. During the insertion process, the elevation of the connecting rod 3 is adjusted by drilling holes and pins 2;

[0034] With anchor support joint A as support, the upper anchor bars 4 of the high section foundation plate are tied from the high section 7 of the variable section foundation plate from the outside to the inside. When tied to the top of the low section 8 of the variable section foundation plate, the upper anchor bars 4 of the high section foundation plate extend vertically downward, and the anchor support joint B is installed at the corresponding position below;

[0035] When installing the anchor support joint B, the hooks at both ends of the connecting rod 3 are tied upwards on the anchor bars 5 of the lower layer of the foundation plate, and the two support tubes 1 are vertically sleeved on the connecting rod 3. The ends of the upper anchor bars 4 of the high-section foundation plate are inserted into the support tubes 1. During the insertion process, the elevation of the upper anchor bars 4 of the high-section foundation plate is adjusted by drilling holes and pins 2;

[0036] The upper anchor bars 4 of the lower foundation plate are supported by anchor bar support seat B and are firmly tied with the upper anchor bars 4 of the higher foundation plate to complete the double-layer anchor bar construction of the variable-section foundation plate.

[0037] In practice, the spacing between the drill holes is 20-100 mm. The length of the broken line section of the support tube 1 in the anchor support joint A is 30-100 mm. The length of the hook sections at both ends of the connecting rod 3 is 50-100 mm. The inner diameter of the support tube 1 is 2 mm larger than the diameter of the anchor bar in the variable cross-section foundation plate.

[0038] In practice, after the installation of anchor support joints A and anchor support joints B, tie rods are tied between adjacent anchor support joints A, and tie rods are tied between adjacent anchor support joints B to further improve stability. In addition, when the horizontal projection distance between support joints A and support joints B on the same side of the variable-section foundation is greater than 1500mm, a brace is added under the upper anchor bar 4 of the foundation plate, the upper end of the brace is tied to the upper anchor bar 4 of the foundation plate, and the lower end is supported on the cushion layer of the slope section 6 of the variable-section foundation plate.

[0039] The solution provided by the embodiment of the present invention utilizes the ends of the upper and lower anchor bars that penetrate deep into the variable-section foundation plate as part of the anchor bar support seat, and additional anchor bar support seat A and anchor bar support seat B steel bar connecting rods form a self-supporting support structure, which is connected into one in the horizontal and vertical directions after binding to coordinate the force, and supports the upper anchor bars of the foundation plate. Compared with the existing construction method, the use of supporting saddles is reduced, saving costs; in addition, by setting the anchor bar support seat B, the supporting saddle under the upper anchor bars of the lower foundation plate is omitted, the construction process is simplified, and construction materials are saved.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A construction method for double-layer anchor bar support joints of variable-section foundation slabs, characterized in that: The method comprises: Anchor support joint A and anchor support joint B are designed, wherein the anchor support joint A comprises two support tubes with drilled holes, pins and connecting rods, the support tubes are folded tubes with a certain bending angle, and the two ends of the connecting rods are 90-degree hooks and can be inserted into the support tubes; the overall structure of the anchor support joint B is the same as that of the anchor support joint A, the only difference being that the support tube in the anchor support joint B is a straight tube; The inner diameter of the support tube and the diameter of the connecting rod are determined according to the diameter of the anchor bar in the variable-section foundation plate. The bending angle of the support tube in the anchor bar support joint A is determined according to the slope of the variable-section foundation. The length of the connecting rod is determined according to the spacing between the anchor bars in the variable-section foundation plate. The straight section length of the support tube in the anchor bar support joint A and the length of the support tube in the anchor bar support joint B are determined according to the distance between the upper anchor bar of the foundation plate and the lower anchor bar of the foundation plate. The anchor bar support joint A and the anchor bar support joint B are cut and manufactured according to the determined data. Lay out the lines according to the conventional procedures, including the bottom edge line of the foundation plate, the anchor bar position line of the lower layer of the foundation plate, and the variable section line. After laying out the lines, tie the anchor bars of the lower layer of the foundation plate; Anchor support seat A is installed on the anchor bars of the lower layer of the foundation plate at the upper edge of the slope section of the variable-section foundation plate. During installation, the broken line segment on the lower side of the support tube in anchor support seat A is put on the end of the anchor bars of the lower layer of the foundation plate, and the straight line segment is ensured to be vertical. The two ends of the connecting rod are inserted into the two supporting tubes. During the insertion process, the elevation of the connecting rod is adjusted by drilling holes and pins; With anchor support joint A as support, tie the upper anchor bars of the variable section foundation plate from the outside to the inside from the high section of the variable section foundation plate. When tied to the top of the low section of the variable section foundation plate, the upper anchor bars of the high section foundation plate extend vertically downward, and the anchor support joint B is installed at the corresponding position below; When installing anchor bar support joint B, the hooks at both ends of the connecting rod are tied upwards to the anchor bars of the lower layer of the foundation plate, and the two support tubes are vertically sleeved on the connecting rods. The ends of the upper anchor bars of the high-section foundation plate are inserted into the support tubes. During the insertion process, the elevation of the upper anchor bars of the high-section foundation plate is adjusted by drilling holes and pins. Use anchor support joint B as support to tie the upper anchor bars of the lower foundation plate and tie them firmly with the upper anchor bars of the higher foundation plate, thus completing the double-layer anchor bar construction of the variable-section foundation plate; After the anchor support seats A and the anchor support seats B are installed, tie rods are tied between adjacent anchor support seats A, and tie rods are tied between adjacent anchor support seats B to further improve stability.

2. The variable cross-section foundation plate double-layer anchor bar support joint construction method according to claim 1, characterized in that: The spacing between the drill holes is 20-100mm.

3. The variable cross-section foundation plate double-layer anchor bar support joint construction method according to claim 1, characterized in that: The length of the broken line section of the support pipe in the anchor support seat A is 30-100mm.

4. The variable cross-section foundation plate double-layer anchor bar support joint construction method according to claim 1, characterized in that: The lengths of the hook sections at both ends of the connecting rod are 50-100mm.

5. The variable cross-section foundation plate double-layer anchor bar support joint construction method according to claim 1, characterized in that: The inner diameter of the support tube is 2 mm larger than the diameter of the anchor bar in the variable-section foundation plate.

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